143424031021 has 2 divisors, whose sum is σ = 143424031022. Its totient is φ = 143424031020.

The previous prime is 143424030947. The next prime is 143424031103. The reversal of 143424031021 is 120130424341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133216970121 + 10207060900 = 364989^2 + 101030^2 .

It is a cyclic number.

It is not a de Polignac number, because 143424031021 - 2¹¹ = 143424028973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143424031321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71712015510 + 71712015511.

It is an arithmetic number, because the mean of its divisors is an integer number (71712015511).

Almost surely, 2^143424031021 is an apocalyptic number.

It is an amenable number.

143424031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

143424031021 is an equidigital number, since it uses as much as digits as its factorization.

143424031021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 143424031021 its reverse (120130424341), we get a palindrome (263554455362).

The spelling of 143424031021 in words is "one hundred forty-three billion, four hundred twenty-four million, thirty-one thousand, twenty-one".